Wrench



(No Model.) G. J. CLINE'.

WRENCH.

No. 332,051. Patented Dec. 8, 1885;

WITNESSES v INVENTOR 7 I g 0. 1f

ATTORNEYS UNITED STATES PATENT OFFICE.

GEORGE J. CLINE, OF GOSHEN, INDIANA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 332,051, dated December8, 1885.

(No model.)

To all whom it may concern:

Be it known that I, GEORGE J. OLINE, a citizen of the United States,residing at Goshen, in the county of Elkhart and State of Indiana, haveinvented certain new and useful Improvements in Wrenches; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which 7 form a part of this specification.

Figure 1 of the drawings is a representation of this invention, and is aside View with the lowerjaw in section. Fig. 2 is a cross-section takenwhere the dotted line is marked on Fig.1.

This invention has relation to monkeywrenches; and it consists in theconstruction and novel arrangement of devices, all as hereinafter setforth, and pointed out in the appended claim.

In the accompanying drawings, the letter A designates the fixed jaw of amonkey-wrench, having a shank, B, which is provided with a rack, C, atits back. D is the movable jaw, sliding on the shank B, and having inits back a recess, E. between an upper lug, F, and a lower lug, G,ot'said jaw. Between these lugs is pivoted, on a pivotal rod or hearingextending parallel to the shank B, a small cam, H, having grooves orribs extending partly around it, and adapted, when said cam is turned,to engage the teeth of the rack on the back of the shank B. The cam H iseccentric, and on one side is provided with a small thumb-lug, L, whichadjoins that portion 2 of the cam which is nearest the center, andwhich, when the cam is turned out of engagement, does not track the rackC. The thumb-lug L is short, and when the cam is turned out ofengagement said lug rests against the inner wall, to, of the recess E inthe back of the movable jaw, so that aguide is provided for theoperator, whereby he can readily disengage the cam and keep it out ofengagement while moving the sliding jaw along the shank in adjusting thewrench to its work. The lug L projects a little when it is in positionbearing against the wall of the sliding jaw, and affords a purchase tothe thumb for moving the jaw backward or forward in adjusting the same.The operator is thus enabled to adjust the wrench easily with one hand,the thumb doing the principal portion of the work, and when adjusted anoutward movement of the thumb turns the cam to bring its swell intoengagement with the rack of the shank.

Having described this invention, what I claim, and desire to secure byLetters Patent,

In a wrench, the combination, with the fixed jaw and rack-shank, of theslidingjaw D, having the back recess, E, opening into the longitudinalrecess, the pivoted rod arranged parallel to the rack-shank and passingthrough the rear of the movable jaw and having a bearing at one end in acollar on the shank and at the other in the fixed jaw, and the groovedcam having a short thumb-lug journaled on the pivoted rod and within therecess of the movable jaw, whereby the thumb may move the leverlaterally to engage, adjust, and secure the sliding jaw to therack-shank, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE J. CLINE. Witnesses:

JOHN H. BAKER, FRANK E. BAKER.

